The SpeechInput feature in Blink, as used in Google Chrome before 35.0.1916.114, allows remote attackers to enable microphone access and obtain speech-recognition text without indication via an INPUT element with a -x-webkit-speech attribute.
- http://blog.guya.net/2014/04/07/to-listen-without-consent-abusing-the-html5-speech/
No PoCs found on GitHub currently.